Fix library path in the module.

Problem/Motivation

Due to recent changes related to allowing library installation using composer, the library folder name has been set as 'tweetabletext' instead of earlier 'tweetable_text'. The path will have to be changed everywhere in order to load the library.

Steps to reproduce

Install latest development release and you will get the error.

Proposed resolution

Modify the path and also update same in the next release notes.

Remaining tasks

User interface changes

API changes

Data model changes